“Code in canvas” disabled after being shortly enabled: how can I retrieve my prototype?

Earlier this week, the Code on canvas feature was enabled for me, and I used it to build an important prototype for a project.

Since then, the feature appears to have been turned off, and I can no longer access the code for that prototype or retrieve it in Figma Make.

I can still see the frame on the canvas, but I no longer see the code, and my coworkers cannot launch the prototype either.

Could you help review whether this file can be restored or whether access to the Code on canvas feature can be re-enabled for this prototype?